General Knowledge PHYSICS MCQs Total Questions : 1426 Page 1 of 72 pages Question 1. Which of the following terms is not used in the field of physics? Latent heat Nuclear fusion Refractive index Stock value See Solution Answer: Option D Question 2. It is easier to roll a stone up a sloping road than to lift it vertical upwards because Work done in rolling is more than in lifting. Work done in lifting the stone is equal to rolling it. Work done in both is same but the rate of doing work is less in rolling. Work done in rolling a stone is less than in lifting it. See Solution Answer: Option D Question 3. Radiocarbon is produced in the atmosphere as a result of Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. Lightning discharge in atmosphere. See Solution Answer: Option A Question 4. Siphon will fail to work if: The densities of the liquid in the two vessels are equal. The level of the liquid in the two vessels are at the same height. Both its limbs are of unequal length. The temperature of the liquids in the two vessels are the same. See Solution Answer: Option B Question 5. The absorption of ink by blotting paper involves: Viscosity of ink Capillary action phenomenon Diffusion of ink through the blotting Siphon action See Solution Answer: Option B Question 6. Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to: The heating effect of current alone Hysteresis loss alone Both the heating effect of current and hysteresis loss Intense sunlight at noon See Solution Answer: Option C Question 7. Nuclear sizes are expressed in a unit named Fermi Angstrom Newton Tesla See Solution Answer: Option A Question 8. Mirage is due to: Unequal heating of different parts of the atmosphere Magnetic disturbances in the atmosphere Depletion of ozone layer in the atmosphere Equal heating of different parts of the atmosphere See Solution Answer: Option A Question 9. Light year is a unit of Time Distance Light Intensity of light See Solution Answer: Option B Question 10. Light from the Sun reaches us in nearly 2 minutes 4 minutes 8 minutes 16 minutes See Solution Answer: Option C Question 11. Stars appears to move from east to west because All stars move from east to west The earth rotates from west to east The earth rotates from east to west The background of the stars moves from west to east See Solution Answer: Option B Question 12. Pa(Pascal) is the unit for Thrust Pressure Frequency Conductivity See Solution Answer: Option B Question 13. Planets do not twinkle because They emit light of a constant intensity Their distance from the earth does not change with time They are very far away from the earth resulting in decrease in intensity of light They are nearer to earth and hence we receive a greater amount of light. See Solution Answer: Option D Question 14. Metals are good conductors of electricity because: They contain free electrons. The atoms are lightly packed. They have high melting point. All of the above. See Solution Answer: Option A Question 15. Let a thin capillary tube be replaced with another tube of insufficient length then, we find water will overflow will not rise depressed change its meniscus See Solution Answer: Option B Question 16. Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension? Pressure and Young's modules Planck's constant and Angular momentum Impulse and moment of force Force and rate of change of linear momentum See Solution Answer: Option C Question 17. If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same: Velocity Momentum Acceleration Kinetic energy See Solution Answer: Option B Question 18. Pick out the scalar quantity Force Pressure Velocity Acceleration See Solution Answer: Option B Question 19. Rectifiers are used to convert: Direct current to Alternating current Alternating current to Direct current High voltage to low voltage Low voltage to high voltage See Solution Answer: Option B Question 20. Out of the following, which is not emitted by radioactive substance? Electrons Electromagnetic radiations Alpha particles Neutrons See Solution Answer: Option D 1234567...7172Next → Share on Facebook! Share on Pinterest!